Four years ago, I promised to end the war in Iraq. We did. I promised to refocus on the terrorists who actually attacked us on 9/11. We have. We've blunted the Taliban's momentum in Afghanistan, and in 2014, our longest war will be over. A new tower rises above the New York skyline, al Qaeda is on the path to defeat, and Osama bin Laden is dead.

We seem to have trouble with [critical thinking]. And our political system doesn't help.

Generally speaking, Rand Paul is been more wrong than right. He has an isolationist view of the world that I don`t share.

I am somebody who usually writes out the rough draft in longhand. Then I type it into the computer, and that is where I do my editing. I find that if I write it on the computer, I go too quick. So I like getting that first draft out and then typing it in; you are less self-conscious about it.

How Donald Trump reaches out to groups that may not have supported him, how he signals his interest in their issues or concerns, I think those are the kinds of things that can set a tone that will help move things forward once he has actually taken office.

I'm suspicious of too much certainty in the pursuit of understanding just because I think people are limited in their understanding.

These kinds of tragedies [like shooting in Fort Lauderdale] have happened too often during the eight years that I've been president. The pain, the grief, the shock that they must be going through is enormous. I've asked me staff to reach out to the mayor down there and make sure that coordination between the state and local officials is what it should be. But I think we'll find out over the next 24 hours exactly how this happened and what motivated this individual.